Rank	Countries/Territories	Count	Percent
1	United States	309	34.8%
2	China	269	30.3%
3	Germany	87	9.8%
4	Japan	44	4.9%
5	Singapore	34	3.8%
6	Canada	24	2.7%
7	France	14	1.6%
8	Switzerland	14	1.6%
9	Korea, Republic of	9	1%
10	India	9	1%
11	Ireland	7	0.8%
12	Netherlands	7	0.8%
13	Cyprus	6	0.7%
14	Australia	6	0.7%
15	Egypt	4	0.4%
16	Iran, Islamic Republic of	4	0.4%
17	Poland	4	0.4%
18	Russia	4	0.4%
19	United Kingdom	4	0.4%
20	Ukraine	3	0.3%
21	Sweden	3	0.3%
22	Argentina	3	0.3%
23	Bulgaria	3	0.3%
24	Iraq	2	0.2%
25	Hong Kong	2	0.2%
26	Turkey	2	0.2%
27	Portugal	2	0.2%
28	Malaysia	2	0.2%
29	Mexico	1	0.1%
30	Romania	1	0.1%
31	Pakistan	1	0.1%
32	Uruguay	1	0.1%
33	Ghana	1	0.1%
34	Austria	1	0.1%
35	Ethiopia	1	0.1%
36	Colombia	1	0.1%